US4396935A - VLSI Packaging system - Google Patents

VLSI Packaging system Download PDF

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Publication number
US4396935A
US4396935A US06/194,521 US19452180A US4396935A US 4396935 A US4396935 A US 4396935A US 19452180 A US19452180 A US 19452180A US 4396935 A US4396935 A US 4396935A
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Prior art keywords
disc
integrated circuit
chip
conductors
circuit package
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US06/194,521
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David B. Schuck
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NCR Voyix Corp
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NCR Corp
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L23/00—Details of semiconductor or other solid state devices
    • H01L23/32—Holders for supporting the complete device in operation, i.e. detachable fixtures
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L23/00—Details of semiconductor or other solid state devices
    • H01L23/02—Containers; Seals
    • H01L23/04—Containers; Seals characterised by the shape of the container or parts, e.g. caps, walls
    • H01L23/053—Containers; Seals characterised by the shape of the container or parts, e.g. caps, walls the container being a hollow construction and having an insulating or insulated base as a mounting for the semiconductor body
    • H01L23/057—Containers; Seals characterised by the shape of the container or parts, e.g. caps, walls the container being a hollow construction and having an insulating or insulated base as a mounting for the semiconductor body the leads being parallel to the base
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L23/00—Details of semiconductor or other solid state devices
    • H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
    • H01L23/36—Selection of materials, or shaping, to facilitate cooling or heating, e.g. heatsinks
    • H01L23/367—Cooling facilitated by shape of device
    • H01L23/3675—Cooling facilitated by shape of device characterised by the shape of the housing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L23/00—Details of semiconductor or other solid state devices
    • H01L23/48—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor
    • H01L23/488—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor consisting of soldered or bonded constructions
    • H01L23/498—Leads, i.e. metallisations or lead-frames on insulating substrates, e.g. chip carriers
    • H01L23/49838—Geometry or layout
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
    • H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
    • H01L2224/42—Wire connectors; Manufacturing methods related thereto
    • H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
    • H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
    • H01L2224/4805—Shape
    • H01L2224/4809—Loop shape
    • H01L2224/48091—Arched
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
    • H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
    • H01L2224/42—Wire connectors; Manufacturing methods related thereto
    • H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
    • H01L2224/49—Structure, shape, material or disposition of the wire connectors after the connecting process of a plurality of wire connectors
    • H01L2224/491—Disposition
    • H01L2224/4912—Layout
    • H01L2224/49171—Fan-out arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L24/00—Arrangements for connecting or disconnecting semiconductor or solid-state bodies; Methods or apparatus related thereto
    • H01L24/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
    • H01L24/42—Wire connectors; Manufacturing methods related thereto
    • H01L24/47—Structure, shape, material or disposition of the wire connectors after the connecting process
    • H01L24/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L24/00—Arrangements for connecting or disconnecting semiconductor or solid-state bodies; Methods or apparatus related thereto
    • H01L24/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
    • H01L24/42—Wire connectors; Manufacturing methods related thereto
    • H01L24/47—Structure, shape, material or disposition of the wire connectors after the connecting process
    • H01L24/49—Structure, shape, material or disposition of the wire connectors after the connecting process of a plurality of wire connectors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/0001—Technical content checked by a classifier
    • H01L2924/00014—Technical content checked by a classifier the subject-matter covered by the group, the symbol of which is combined with the symbol of this group, being disclosed without further technical details
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/01—Chemical elements
    • H01L2924/01079—Gold [Au]
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/10—Details of semiconductor or other solid state devices to be connected
    • H01L2924/11—Device type
    • H01L2924/14—Integrated circuits
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/15—Details of package parts other than the semiconductor or other solid state devices to be connected
    • H01L2924/151—Die mounting substrate
    • H01L2924/1515—Shape
    • H01L2924/15153—Shape the die mounting substrate comprising a recess for hosting the device
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/15—Details of package parts other than the semiconductor or other solid state devices to be connected
    • H01L2924/151—Die mounting substrate
    • H01L2924/15165—Monolayer substrate
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/15—Details of package parts other than the semiconductor or other solid state devices to be connected
    • H01L2924/151—Die mounting substrate
    • H01L2924/153—Connection portion
    • H01L2924/1532—Connection portion the connection portion being formed on the die mounting surface of the substrate
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/15—Details of package parts other than the semiconductor or other solid state devices to be connected
    • H01L2924/161—Cap
    • H01L2924/1615—Shape
    • H01L2924/16152—Cap comprising a cavity for hosting the device, e.g. U-shaped cap
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/15—Details of package parts other than the semiconductor or other solid state devices to be connected
    • H01L2924/161—Cap
    • H01L2924/1615—Shape
    • H01L2924/16195—Flat cap [not enclosing an internal cavity]

Definitions

  • the present invention relates to a circuit package and, more particularly, to a leadless circuit package for supporting flat circuit elements such as integrated circuit chips and an electrical connector for receiving such package.
  • Leadless integrated circuit packages are commonly used for mounting integrated circuits on printed circuit boards, computer backpanels, and the like, and have signicant advantages over conventional dual in-line packages (DIP) and single in-line packages (SIP) in the manufacture of large electronic systems, such as computers. If, during the assembly of integrated circuits on a computer backpanel, a defect is discovered in one of the integrated circuits, the leadless package having the defective integrated circuit is simply removed from its electrical connector and replaced with a new package. This eliminates both the problem of removing packages having soldered leads or pins and the potential for bending or breaking such pins when removed.
  • DIP dual in-line packages
  • SIP single in-line packages
  • An integrated circuit package includes a support disc with an integrated circuit chip mounted on it.
  • the integrated circuit packages generally are of a square or rectangular configuration.
  • the integrated circuit package is inserted into a plastic socket that has a metal spring-loaded lid.
  • the integrated circuit package is suspended between a plurality of spring-loaded socket contact pins and the metal spring-loaded lid.
  • the purpose of the lid is simply to hold the integrated circuit package down against the socket contact pins.
  • the lid is often difficult to close and in some cases the lid can appear to be closed when it in fact is not. Further, since the lid is metal, care must be taken in the design and maintenance of the system to avoid contact between the lid and adjacent circuitry.
  • an integrated circuit package for supporting flat circuit elements includes a non-conductive, round support disc that has a top surface and a bottom surface.
  • a plurality of electrical conductors is affixed to the top surface of the disc to provide a plurality of operative connections between the flat circuit elements and the periphery of the disc.
  • An electrical connector is provided for receiving the integrated circuit package or an integrated circuit having a round configuration and further having a plurality of electrical conductors.
  • the electrical connector comprises a housing with a cylindrical cavity for receiving the integrated circuit package or integrated circuit, the housing being of an electrically non-conducting material, and having a plurality of pins.
  • the plurality of pins extend from outside the housing, through the housing, and into the cylindrical cavity, thereby providing a plurality of electrical contact points for the corresponding plurality of electrical conductors of the integrated circuit package or the integrated circuit.
  • the pins protrude into the cylindrical cavity in a circular pattern around the inside of the housing and in a plane perpendicular to the axis of the housing.
  • the plurality of pins are of a resilient electrically conductive material.
  • FIG. 1 is an exploded perspective view of an electrical connector assembly in accordance with the present invention, with an integrated circuit package shown positioned for insertion into the electrical connector;
  • FIG. 2 is a top view of the integrated circuit package of the present invention with a lid removed;
  • FIG. 3 is a cross-section of the integrated circuit package of FIG. 2 taken along the section line I--I, with the lid in place;
  • FIG. 4 is a partial-exploded perspective sectional view of the integrated circuit package of FIG. 2 taken along the section line I--I.
  • FIG. 5 is a perspective sectional view of the connector of FIG. 1 taken along the section line II--II;
  • FIG. 6 is a cross-sectional view of the electrical connector assembly of FIG. 1 taken along section line II--II with the integrated circuit package mounted in the electrical connector and a cap in place securely holding the integrated circuit package;
  • FIG. 7 is a wide angle perspective top view of an alternate embodiment of the electrical connector
  • FIG. 8 is a cross-sectional view of the electrical connector assembly of FIG. 1 taken along the section line II--II with a heat sink mounted in the electrical connector;
  • FIG. 9 is a cross-sectional view of the electrical connector assembly of FIG. 1 taken along section line II--II showing an alternative embodiment of a heat sink shown inserted in the cap of the electrical connector.
  • FIG. 1 shows an electrical connector assembly 10 for electrically connecting an integrated circuit chip 12 to a backpanel 14.
  • the integrated circuit chip 12 is supported or mounted on the underside of a disc 16 that forms the support member of a leadless integrated circuit package.
  • the integrated circuit chip 12 is mounted in a generally central location on the disc 16 and is electrically connected by appropriate conductive paths provided on a surface of the disc 16 to a plurality of pins of an electrical connector 20.
  • the integrated circuit package 16 is inserted into the electrical connector 20 and is held in place by a cap 22 screwed onto the electrical connector.
  • a hole 24 small enough to prevent the integrated circuit package from passing through it but large enough to allow for a variety of heat sink alternatives is formed in the cap.
  • the integrated circuit package will be described in conjunction with FIGS. 1, 2, 3 and 4.
  • the disc 16 is of a ceramic material, although other non-conductive materials may be used, forming what is more commonly known in the art as a carrier or substrate and it has a circular recess 26 with a diameter large enough to accept the integrated circuit chip 12.
  • the integrated circuit chip 12 is placed in the recess 26 and affixed to the inside bottom surface 27 of the recess.
  • a plurality of electrical conductors 28 are affixed to the upper surface 29 of the disc 16 so that they extend radially from the periphery of the recess 26 to the periphery of disc 16.
  • the integrated circuit chip 12 is connected via leads 30 to the respective electrical conductors 28 in a manner well known in the art.
  • FIG. 2 shows the electrical conductors 28 extending radially outwardly and with the width of the electrical conductors 28 increasing as they approach the periphery of disc 16, it will be understood that various configurations may be utilized for the electrical conductors 28.
  • the width of each conductor may remain constant, as shown by electrical conductors 31, thereby reducing the amount of electrically conductive material required for the electrical conductor 28. This is especially important when electrical conductors 28 utilize a high cost metal such as gold.
  • the electrical conductors 28 need to have an adequate cross-section, to carry the current required by the chip 12 and the width of each of the conductors must be great enough to insure proper contact with its respective pin in the electrical connector 20.
  • a housing covers the integrated circuit chip 12.
  • a ring 32 is affixed to the upper surface 29 of integrated circuit package 16 and is made of a non-conductive material and covered with a lid 34 of a similar non-conductive material. Note that FIG. 2 shows the housing without the lid 34 attached.
  • a notch 36 is formed in the periphery of the disc 16 to hold the disc in a fixed position so that it is not free to rotate in the electrical connector 20, and the integrated circuit package 16 is properly positioned in the electrical connector 20.
  • the electrical connector 20 comprises a base 40 made of a non-conductive material having a disc-like shape.
  • the axis of the cylindrical wall 42 is coincident with the axis of the base 40, and the cylindrical wall 42 and base 40 formed a cavity 43, which serves as a receptacle for receiving integrated circuit package.
  • the inside diameter of cylindrical wall 42 at the opened end i.e., that end of the cylinder remote from the base 40, is just large enough to receive the integrated circuit package 16.
  • the inside diameter of cylindrical wall 42 at the closed end i.e., the end closer to the base 40, is smaller than the inside diameter at the opened end.
  • the smaller diameter inside wall rises toward the open end within the cavity 43, the smaller diameter inside wall maintaining the same diameter.
  • the diameter changes to equal that of the inside diameter of the opened end, forming a step or pedestal 44 within the cavity 43.
  • the diameter of the smaller inside diameter wall is large enough to accept the ring 32 and lid 34 of the integrated circuit package 16.
  • a plurality of pins 46 are arranged in a circular fashion extending from outside the base 40 and are sufficiently long to extend through backpanel 14 and through the cylindrical wall 42, into the cavity 43 of electrical connector 20.
  • the pins enter the cavity 43 from the step or pedestal 44 surface, forming a plurality of electrical contact points 47 for the electrical conductors 28 of the integrated circuit package 16.
  • Pins 46 along the surface of the pedestal 44 are of a resilient electrically conducting material.
  • a keyway 50 runs along the inside surface of cylindrical wall 42 parallel to the cylindrical wall axis.
  • the outside of the cylindrical wall is threaded to provide a fastening means for the cap 22.
  • FIG. 6 shows a cross-section of the electrical connector assembly 10 fully assembled, the support disc 16 being held firmly in place between the cap 22 and the resilient spring-like electrical contact points 47 of pins 46.
  • the holding device is a cap 22, the inside circular surface 39 of which forms a positive stop against the top surface 41 of cylindrical wall 42. The distance between top surface 41 and the pedestal 44 is such that when cap 22 is firmly against the positive stop, the disc 16 applies the proper compression force against the electrical contact points 47 of pins 46.
  • the ring 32 and lid 34 of integrated circuit package 16 extend into the cavity 43, the smaller inside diameter of cylindrical wall 42 being large enough to accept the ring 32 and the height of the pedestal 44 being high enough to accept ring 32 and lid 34, allowing the electrical conductors 28 to press firmly against the electrical contact points 47 of pins 46.
  • the integrated circuit package 16 is placed upside down into the cavity 43 of the electrical connector 20, so that the notch 36 coincides with keyway 50.
  • the disc 16 contains tabs 51 allowing the disc 16 to be guided and held firmly in place against the contact points 47 of pins 46.
  • the inner surface of the cylindrical wall 42 contains slots 53 corresponding to the tabs 51.
  • the flat circuit element such as the integrated circuit chip could have a circular configuration and be large enough and strong enough so that it would not need to be mounted on the support disc 16.
  • the integrated circuit could be directly inserted into electrical connector 20 if the proper guide were included in the integrated circuit and if the conductors of the integrated circuit corresponded to the electrical contact points 47 of pins 46 of the electrical connector 20.
  • FIGS. 8 and 9 show two varieties of heat sink alternatives.
  • the hole 24 in cap 22 is small enough to hold the disc 16 properly against the electrical contact points 47 of pins 46 and is large enough to permit fins of a heat sink 52 to pass through the. If additional cooling is required, larger fins may be utilized by constructing the heat sink 52 in two parts as shown in FIG. 9. It will be recognized by those skilled in the art that many alternative forms of heat sinks 52 may be utilized in conjunction with the electrical connector 20 of the present invention.

Abstract

The present invention relates to an integrated circuit package for flat circuit elements such as an integrated circuit chip and an electrical connector for receiving such integrated circuit package. The integrated circuit package comprises a round ceramic carrier or substrate upon which an integrated circuit chip is mounted. The electrical connector of the present invention is a cylindrically shaped hollow socket, the inside diameter of the socket being large enough such that the ceramic substrate may be placed in the hollow. The inside cylindrical wall contains resilient pin-like connections arranged in a circle therein for making contact with a corresponding conductor of the integrated circuit package. The outside surface of the cylindrically shaped electrical connector is threaded for receiving a cap which holds the integrated circuit package against the resilient pin-like connections.

Description

BACKGROUND OF THE INVENTION
The present invention relates to a circuit package and, more particularly, to a leadless circuit package for supporting flat circuit elements such as integrated circuit chips and an electrical connector for receiving such package.
Leadless integrated circuit packages are commonly used for mounting integrated circuits on printed circuit boards, computer backpanels, and the like, and have signicant advantages over conventional dual in-line packages (DIP) and single in-line packages (SIP) in the manufacture of large electronic systems, such as computers. If, during the assembly of integrated circuits on a computer backpanel, a defect is discovered in one of the integrated circuits, the leadless package having the defective integrated circuit is simply removed from its electrical connector and replaced with a new package. This eliminates both the problem of removing packages having soldered leads or pins and the potential for bending or breaking such pins when removed.
An integrated circuit package includes a support disc with an integrated circuit chip mounted on it. In present systems the integrated circuit packages generally are of a square or rectangular configuration. The integrated circuit package is inserted into a plastic socket that has a metal spring-loaded lid. In this manner, the integrated circuit package is suspended between a plurality of spring-loaded socket contact pins and the metal spring-loaded lid. The purpose of the lid is simply to hold the integrated circuit package down against the socket contact pins. In such systems the lid is often difficult to close and in some cases the lid can appear to be closed when it in fact is not. Further, since the lid is metal, care must be taken in the design and maintenance of the system to avoid contact between the lid and adjacent circuitry.
SUMMARY OF THE INVENTION
In accordance with the present invention an integrated circuit package for supporting flat circuit elements, including integrated circuit chips, includes a non-conductive, round support disc that has a top surface and a bottom surface. A plurality of electrical conductors is affixed to the top surface of the disc to provide a plurality of operative connections between the flat circuit elements and the periphery of the disc. An electrical connector is provided for receiving the integrated circuit package or an integrated circuit having a round configuration and further having a plurality of electrical conductors. The electrical connector comprises a housing with a cylindrical cavity for receiving the integrated circuit package or integrated circuit, the housing being of an electrically non-conducting material, and having a plurality of pins. The plurality of pins extend from outside the housing, through the housing, and into the cylindrical cavity, thereby providing a plurality of electrical contact points for the corresponding plurality of electrical conductors of the integrated circuit package or the integrated circuit. The pins protrude into the cylindrical cavity in a circular pattern around the inside of the housing and in a plane perpendicular to the axis of the housing. The plurality of pins are of a resilient electrically conductive material.
It is, therefore, an object of the present invention to provide a leadless integrated circuit package.
It is another object of the present invention to provide a leadless integrated circuit package and to provide an electrical connector for receiving the leadless integrated circuit package.
These and other objects of the present invention will become more apparent when taken in conjunction with the following description, and attached drawings, wherein like characters indicate like parts and which drawings form a part of the present application.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is an exploded perspective view of an electrical connector assembly in accordance with the present invention, with an integrated circuit package shown positioned for insertion into the electrical connector;
FIG. 2 is a top view of the integrated circuit package of the present invention with a lid removed;
FIG. 3 is a cross-section of the integrated circuit package of FIG. 2 taken along the section line I--I, with the lid in place;
FIG. 4 is a partial-exploded perspective sectional view of the integrated circuit package of FIG. 2 taken along the section line I--I.
FIG. 5 is a perspective sectional view of the connector of FIG. 1 taken along the section line II--II;
FIG. 6 is a cross-sectional view of the electrical connector assembly of FIG. 1 taken along section line II--II with the integrated circuit package mounted in the electrical connector and a cap in place securely holding the integrated circuit package;
FIG. 7 is a wide angle perspective top view of an alternate embodiment of the electrical connector;
FIG. 8 is a cross-sectional view of the electrical connector assembly of FIG. 1 taken along the section line II--II with a heat sink mounted in the electrical connector; and
FIG. 9 is a cross-sectional view of the electrical connector assembly of FIG. 1 taken along section line II--II showing an alternative embodiment of a heat sink shown inserted in the cap of the electrical connector.
DETAILED DESCRIPTION
FIG. 1 shows an electrical connector assembly 10 for electrically connecting an integrated circuit chip 12 to a backpanel 14. The integrated circuit chip 12 is supported or mounted on the underside of a disc 16 that forms the support member of a leadless integrated circuit package. The integrated circuit chip 12 is mounted in a generally central location on the disc 16 and is electrically connected by appropriate conductive paths provided on a surface of the disc 16 to a plurality of pins of an electrical connector 20. The integrated circuit package 16 is inserted into the electrical connector 20 and is held in place by a cap 22 screwed onto the electrical connector. A hole 24 small enough to prevent the integrated circuit package from passing through it but large enough to allow for a variety of heat sink alternatives is formed in the cap.
The integrated circuit package will be described in conjunction with FIGS. 1, 2, 3 and 4. The disc 16 is of a ceramic material, although other non-conductive materials may be used, forming what is more commonly known in the art as a carrier or substrate and it has a circular recess 26 with a diameter large enough to accept the integrated circuit chip 12. The integrated circuit chip 12 is placed in the recess 26 and affixed to the inside bottom surface 27 of the recess. A plurality of electrical conductors 28 are affixed to the upper surface 29 of the disc 16 so that they extend radially from the periphery of the recess 26 to the periphery of disc 16. The integrated circuit chip 12 is connected via leads 30 to the respective electrical conductors 28 in a manner well known in the art.
Although FIG. 2 shows the electrical conductors 28 extending radially outwardly and with the width of the electrical conductors 28 increasing as they approach the periphery of disc 16, it will be understood that various configurations may be utilized for the electrical conductors 28. For example, the width of each conductor may remain constant, as shown by electrical conductors 31, thereby reducing the amount of electrically conductive material required for the electrical conductor 28. This is especially important when electrical conductors 28 utilize a high cost metal such as gold. The electrical conductors 28 need to have an adequate cross-section, to carry the current required by the chip 12 and the width of each of the conductors must be great enough to insure proper contact with its respective pin in the electrical connector 20.
In order to protect the integrated circuit chip 12, a housing covers the integrated circuit chip 12. A ring 32 is affixed to the upper surface 29 of integrated circuit package 16 and is made of a non-conductive material and covered with a lid 34 of a similar non-conductive material. Note that FIG. 2 shows the housing without the lid 34 attached.
A notch 36 is formed in the periphery of the disc 16 to hold the disc in a fixed position so that it is not free to rotate in the electrical connector 20, and the integrated circuit package 16 is properly positioned in the electrical connector 20.
The electrical connector 20 will now be described in conjunction with FIGS. 1 and 5. The electrical connector 20 comprises a base 40 made of a non-conductive material having a disc-like shape. In the preferred embodiment, a cylindrical wall 42 having a top surface 41, whose outside diameter is less than that of the base 40, is affixed to the base 40. The axis of the cylindrical wall 42 is coincident with the axis of the base 40, and the cylindrical wall 42 and base 40 formed a cavity 43, which serves as a receptacle for receiving integrated circuit package.
The inside diameter of cylindrical wall 42 at the opened end, i.e., that end of the cylinder remote from the base 40, is just large enough to receive the integrated circuit package 16. The inside diameter of cylindrical wall 42 at the closed end, i.e., the end closer to the base 40, is smaller than the inside diameter at the opened end. The smaller diameter inside wall rises toward the open end within the cavity 43, the smaller diameter inside wall maintaining the same diameter. At a point before reaching the top surface 41, the diameter changes to equal that of the inside diameter of the opened end, forming a step or pedestal 44 within the cavity 43. The diameter of the smaller inside diameter wall is large enough to accept the ring 32 and lid 34 of the integrated circuit package 16. A plurality of pins 46 are arranged in a circular fashion extending from outside the base 40 and are sufficiently long to extend through backpanel 14 and through the cylindrical wall 42, into the cavity 43 of electrical connector 20. The pins enter the cavity 43 from the step or pedestal 44 surface, forming a plurality of electrical contact points 47 for the electrical conductors 28 of the integrated circuit package 16. Pins 46 along the surface of the pedestal 44 are of a resilient electrically conducting material.
A keyway 50 runs along the inside surface of cylindrical wall 42 parallel to the cylindrical wall axis. The outside of the cylindrical wall is threaded to provide a fastening means for the cap 22.
FIG. 6 shows a cross-section of the electrical connector assembly 10 fully assembled, the support disc 16 being held firmly in place between the cap 22 and the resilient spring-like electrical contact points 47 of pins 46. It will be recognized that many alternative means exist for holding the integrated circuit package 16 in the electrical connector 20. In the preferred embodiment, the holding device is a cap 22, the inside circular surface 39 of which forms a positive stop against the top surface 41 of cylindrical wall 42. The distance between top surface 41 and the pedestal 44 is such that when cap 22 is firmly against the positive stop, the disc 16 applies the proper compression force against the electrical contact points 47 of pins 46. The ring 32 and lid 34 of integrated circuit package 16 extend into the cavity 43, the smaller inside diameter of cylindrical wall 42 being large enough to accept the ring 32 and the height of the pedestal 44 being high enough to accept ring 32 and lid 34, allowing the electrical conductors 28 to press firmly against the electrical contact points 47 of pins 46. The integrated circuit package 16 is placed upside down into the cavity 43 of the electrical connector 20, so that the notch 36 coincides with keyway 50.
It will be recognized by those skilled in the art that additional keyways and notches may be placed in the electrical connector 20 and in the disc 16, respectively, so as to code corresponding integrated circuit packages, thereby eliminating the risk or possibility of placing an incorrect integrated circuit package into the wrong electrical connector 20. It will be further recognized that many alternatives exist for guiding the integrated circuit package into the electrical connector 20, such as having the notch(s) in the inner cylindrical wall and a corresponding tab(s) on the disc 16.
In an alternative embodiment, shown in FIG. 7, the disc 16 contains tabs 51 allowing the disc 16 to be guided and held firmly in place against the contact points 47 of pins 46. In this embodiment the inner surface of the cylindrical wall 42 contains slots 53 corresponding to the tabs 51. After the integrated circuit package is inserted into electrical connector 20 and pressed against the resilient electrical contact points 47 of pins 46, the integrated circuit package is rotated clockwise so that the tab 51 is placed under a corresponding lip 55, thereby holding the integrated circuit package in place. The distance between the lip 55 and the pins is selected to cause the proper compression force to be placed against the electrical contact points 47 of pins 46.
Conceivably, the flat circuit element such as the integrated circuit chip could have a circular configuration and be large enough and strong enough so that it would not need to be mounted on the support disc 16. In such case the integrated circuit could be directly inserted into electrical connector 20 if the proper guide were included in the integrated circuit and if the conductors of the integrated circuit corresponded to the electrical contact points 47 of pins 46 of the electrical connector 20.
FIGS. 8 and 9 show two varieties of heat sink alternatives. In FIG. 8 the hole 24 in cap 22 is small enough to hold the disc 16 properly against the electrical contact points 47 of pins 46 and is large enough to permit fins of a heat sink 52 to pass through the. If additional cooling is required, larger fins may be utilized by constructing the heat sink 52 in two parts as shown in FIG. 9. It will be recognized by those skilled in the art that many alternative forms of heat sinks 52 may be utilized in conjunction with the electrical connector 20 of the present invention.
While there has been shown what is considered to be the preferred embodiment of the invention, it will be manifest that many changes and modifications can be made therein without departing from the essential spirit and scope of the invention. It is intended, therefore, in the annexed claims to cover all such changes and modifications which fall within the true scope of the invention.

Claims (3)

I claim:
1. A package to contain an integrated circuit that includes a semiconductor chip having a plurality of leads connected to the chip, said package comprising:
an insulating support disc having a back surface and a front surface and a recess in a region of said front surface of the disc, the recess having a perimetral wall and a bottom wall defining a space large enough to receive the chip, the chip being affixed to the bottom wall of the recess with the leads extending outwardly;
a plurality of conductors adhering to the top surface of the disc and extending outwardly toward the outer perimeter of the disc from the region in which the recess is defined, each of the leads from the chip being conductively affixed to radially inward regions of respective ones of the conductors;
an annular, insulating ring having one axial end surface affixed to the front surface of said disc outwardly of said radially inward regions of the conductors;
an insulating cover disc attached to the other axial end surface of the annular ring and forming, with the ring and the support disc, an enclosure for the chip;
a plurality of contact members, each comprising a relatively rigid pin portion and a resilient end;
rigid base means to support the pin portions of the contact members in insulated, spaced-apart arrangement with the resilient ends of the contact members aligned with radially outward portions of respective ones of the conductors, the base means comprising a tubular portion having a larger inner diameter than the outer diameter of the support disc and an inner axial length greater than the thickness of the support disc, the outer surface of the tubular portion being threaded;
a cap having an end portion with a central aperture and a tubular portion with an internal thread that conforms to the externally threaded outer surface of the tubular portion of the base means, whereby the cap may be screwed onto the tubular portion of the base means to enclose the chip, the support disc and the conductors thereon, and the insulating ring and cover disc attached thereto;
heat transfer means comprising an end disc portion affixed to the rear surface of the support disc to receive and transfer heat therefrom, the outer perimeter of the disc portion extending at least part way across the annular end wall of the tubular portion of the base means to close off the tubular portion, the heat transfer means further comprising: a central stem extending through the aperture in the cap, and heat dissipation plate means extending outwardly from the stem outside of the cap; and
alignment means to hold the support disc and the base means in fixed angular relationship to allow the resilient ends of the contact members to engage the conductors on the support disc only in a predetermined alignment.
2. The package of claim 1 in which the heat transfer means extend radially outwardly a greater distance than the radial dimension of the aperture in the cap, and the stem comprises:
an outer part to which the heat dissipation plate means are attached, and an inner part; and
locking means to connect the inner part to the disc portion of the heat transfer means.
3. The package of claim 1 or claim 2 in which the heat dissipation plate means comprises a circular plate extending radially outwardly perpendicular to the axis of the stem.
US06/194,521 1980-10-06 1980-10-06 VLSI Packaging system Expired - Lifetime US4396935A (en)

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US4517584A (en) * 1981-12-11 1985-05-14 Hitachi, Ltd. Ceramic packaged semiconductor device
US4549036A (en) * 1984-07-23 1985-10-22 Reichbach Morris M Circular integrated circuit package
US4611886A (en) * 1983-12-29 1986-09-16 At&T Bell Laboratories Integrated optical circuit package
EP0218796A2 (en) * 1985-08-16 1987-04-22 Dai-Ichi Seiko Co. Ltd. Semiconductor device comprising a plug-in-type package
GB2188485A (en) * 1986-03-25 1987-09-30 Western Digital Corp Integrated circuit chip mounting and packaging assembly
EP0239494A1 (en) * 1986-03-28 1987-09-30 Bull S.A. Integrated circuit housing
US4698663A (en) * 1986-09-17 1987-10-06 Fujitsu Limited Heatsink package for flip-chip IC
US4764848A (en) * 1986-11-24 1988-08-16 International Business Machines Corporation Surface mounted array strain relief device
EP0285277A1 (en) * 1987-03-31 1988-10-05 Amp Incorporated Chip carrier with energy storage means
FR2621173A1 (en) * 1987-09-29 1989-03-31 Bull Sa HIGH DENSITY INTEGRATED CIRCUIT BOX
US4887147A (en) * 1987-07-01 1989-12-12 Digital Equipment Corporation Thermal package for electronic components
US4918571A (en) * 1987-03-31 1990-04-17 Amp Incorporated Chip carrier with energy storage means
US5157478A (en) * 1989-04-19 1992-10-20 Mitsubishi Denki Kabushiki Kaisha Tape automated bonding packaged semiconductor device incorporating a heat sink
US5172301A (en) * 1991-10-08 1992-12-15 Lsi Logic Corporation Heatsink for board-mounted semiconductor devices and semiconductor device assembly employing same
US5175612A (en) * 1989-12-19 1992-12-29 Lsi Logic Corporation Heat sink for semiconductor device assembly
US5202943A (en) * 1991-10-04 1993-04-13 International Business Machines Corporation Optoelectronic assembly with alignment member
US5227663A (en) * 1989-12-19 1993-07-13 Lsi Logic Corporation Integral dam and heat sink for semiconductor device assembly
US5256902A (en) * 1991-08-14 1993-10-26 Vlsi Technology, Inc. Metal heatsink attach system
US5281758A (en) * 1992-11-12 1994-01-25 Gte Products Corporation Electrical contact with shock absorbing means
US5299730A (en) * 1989-08-28 1994-04-05 Lsi Logic Corporation Method and apparatus for isolation of flux materials in flip-chip manufacturing
US5367193A (en) * 1993-06-17 1994-11-22 Sun Microsystems, Inc. Low cost, thermally efficient, and surface mountable semiconductor package for a high applied power VLSI die
US5376010A (en) * 1994-02-08 1994-12-27 Minnesota Mining And Manufacturing Company Burn-in socket
US5388327A (en) * 1993-09-15 1995-02-14 Lsi Logic Corporation Fabrication of a dissolvable film carrier containing conductive bump contacts for placement on a semiconductor device package
US5397919A (en) * 1993-03-04 1995-03-14 Square Head, Inc. Heat sink assembly for solid state devices
US5399903A (en) * 1990-08-15 1995-03-21 Lsi Logic Corporation Semiconductor device having an universal die size inner lead layout
US5434750A (en) * 1992-02-07 1995-07-18 Lsi Logic Corporation Partially-molded, PCB chip carrier package for certain non-square die shapes
US5438477A (en) * 1993-08-12 1995-08-01 Lsi Logic Corporation Die-attach technique for flip-chip style mounting of semiconductor dies
US5579827A (en) * 1995-11-13 1996-12-03 Us Micro Lab, Inc. Heat sink arrangement for central processing unit
US5654587A (en) * 1993-07-15 1997-08-05 Lsi Logic Corporation Stackable heatsink structure for semiconductor devices
WO1997044991A1 (en) * 1996-05-23 1997-11-27 Motorola Inc. Apparatus and method for mounting an electronic component to a substrate
US5773886A (en) * 1993-07-15 1998-06-30 Lsi Logic Corporation System having stackable heat sink structures
US5820014A (en) 1993-11-16 1998-10-13 Form Factor, Inc. Solder preforms
US5869778A (en) * 1993-12-14 1999-02-09 Lsi Logic Corporation Powder metal heat sink for integrated circuit devices
USRE36217E (en) * 1995-02-06 1999-06-01 Minnesota Mining And Manufacturing Company Top load socket for ball grid array devices
US5923179A (en) * 1996-03-29 1999-07-13 Intel Corporation Thermal enhancing test/burn in socket for C4 and tab packaging
US5960975A (en) * 1996-04-01 1999-10-05 Tetra Laval Holdings & Finance S.A. Packaging material web for a self-supporting packaging container wall, and packaging containers made from the web
US5963795A (en) * 1993-12-14 1999-10-05 Lsi Logic Corporation Method of assembling a heat sink assembly
US5994152A (en) 1996-02-21 1999-11-30 Formfactor, Inc. Fabricating interconnects and tips using sacrificial substrates
US6007348A (en) * 1996-05-07 1999-12-28 Advanced Intercommunications Corporation Solder ball terminal
GB2339343A (en) * 1998-07-09 2000-01-19 Advantest Corp IC socket for holding IC having multiple parallel pins
US6023103A (en) * 1994-11-15 2000-02-08 Formfactor, Inc. Chip-scale carrier for semiconductor devices including mounted spring contacts
WO2001020674A2 (en) * 1999-09-10 2001-03-22 Llanelli Radiators Limited Assembly for electrical/electronic components
US6256202B1 (en) 2000-02-18 2001-07-03 Advanced Interconnections Corporation Integrated circuit intercoupling component with heat sink
US6274823B1 (en) 1993-11-16 2001-08-14 Formfactor, Inc. Interconnection substrates with resilient contact structures on both sides
US6293331B1 (en) 2000-08-11 2001-09-25 Tyco Electronics Logistics Ag Vibration and shock resistant heat sink assembly
US6454587B1 (en) * 2000-10-27 2002-09-24 Hewlett-Packard Company Assembly for mounting a bus termination device to a printed circuit board (PCB)
US6529378B2 (en) 1999-10-18 2003-03-04 Intel Corporation Integrated circuit heat sink support and retention mechanism
US6680528B2 (en) * 1999-02-05 2004-01-20 Matsushita Electric Industrial Co., Ltd. Electronic component and electronic equipment using the same
US6960923B2 (en) * 2001-12-19 2005-11-01 Formfactor, Inc. Probe card covering system and method
US20060089014A1 (en) * 2004-10-25 2006-04-27 Hon Hai Precision Ind. Co., Ltd. Module connector
US20070181555A1 (en) * 2006-02-09 2007-08-09 Onscreen Technologies, Inc. Method and apparatus for leak-proof mounting of a liquid cooling device on an integrated circuit
US20070289313A1 (en) * 2006-06-15 2007-12-20 Mohinder Singh Bhatti Thermosiphon with thermoelectrically enhanced spreader plate
US7476110B2 (en) 1996-10-10 2009-01-13 Fci Americas Technology, Inc. High density connector and method of manufacture
US20100178780A1 (en) * 2009-01-13 2010-07-15 Hon Hai Precision Industry Co., Ltd. Socket assembly incorporated with rotationally mounted pressing member
US8033838B2 (en) 1996-02-21 2011-10-11 Formfactor, Inc. Microelectronic contact structure
US8373428B2 (en) 1993-11-16 2013-02-12 Formfactor, Inc. Probe card assembly and kit, and methods of making same
JP2015133875A (en) * 2014-01-15 2015-07-23 株式会社東芝 power converter
US9736966B1 (en) * 2016-02-10 2017-08-15 International Business Machines Corporation Heat sink with integrated threaded lid
US10070562B2 (en) * 2016-05-17 2018-09-04 Ge Aviation Systems Llc Method and apparatus for heat-dissipation in an avionics chassis

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Cited By (79)

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Publication number Priority date Publication date Assignee Title
US4517584A (en) * 1981-12-11 1985-05-14 Hitachi, Ltd. Ceramic packaged semiconductor device
US4611886A (en) * 1983-12-29 1986-09-16 At&T Bell Laboratories Integrated optical circuit package
US4549036A (en) * 1984-07-23 1985-10-22 Reichbach Morris M Circular integrated circuit package
EP0218796A2 (en) * 1985-08-16 1987-04-22 Dai-Ichi Seiko Co. Ltd. Semiconductor device comprising a plug-in-type package
EP0218796A3 (en) * 1985-08-16 1987-06-16 Dai-Ichi Seiko Co. Ltd. Semiconductor device comprising a plug-in-type package
US4843188A (en) * 1986-03-25 1989-06-27 Western Digital Corporation Integrated circuit chip mounting and packaging assembly
GB2188485A (en) * 1986-03-25 1987-09-30 Western Digital Corp Integrated circuit chip mounting and packaging assembly
DE3708309A1 (en) * 1986-03-25 1987-10-01 Western Digital Corp CHIP PACK
GB2188485B (en) * 1986-03-25 1990-04-04 Western Digital Corp Electronic component mounting and pakaging assembly
FR2596607A1 (en) * 1986-03-28 1987-10-02 Bull Sa METHOD FOR MOUNTING AN INTEGRATED CIRCUIT ON A CIRCUIT BOARD, INTEGRATED CIRCUIT BOX AND INTEGRATED CIRCUIT BOARD FOR IMPLEMENTING THE METHOD
US4812949A (en) * 1986-03-28 1989-03-14 Bull, S.A. Method of and apparatus for mounting an IC chip
EP0239494A1 (en) * 1986-03-28 1987-09-30 Bull S.A. Integrated circuit housing
US4742024A (en) * 1986-09-17 1988-05-03 Fujitsu Limited Semiconductor device and method of producing semiconductor device
US4698663A (en) * 1986-09-17 1987-10-06 Fujitsu Limited Heatsink package for flip-chip IC
US4764848A (en) * 1986-11-24 1988-08-16 International Business Machines Corporation Surface mounted array strain relief device
EP0285277A1 (en) * 1987-03-31 1988-10-05 Amp Incorporated Chip carrier with energy storage means
US4918571A (en) * 1987-03-31 1990-04-17 Amp Incorporated Chip carrier with energy storage means
US4887147A (en) * 1987-07-01 1989-12-12 Digital Equipment Corporation Thermal package for electronic components
FR2621173A1 (en) * 1987-09-29 1989-03-31 Bull Sa HIGH DENSITY INTEGRATED CIRCUIT BOX
EP0310463A1 (en) * 1987-09-29 1989-04-05 Bull S.A. Housing for a high-density integrated circuit
US5157478A (en) * 1989-04-19 1992-10-20 Mitsubishi Denki Kabushiki Kaisha Tape automated bonding packaged semiconductor device incorporating a heat sink
US5299730A (en) * 1989-08-28 1994-04-05 Lsi Logic Corporation Method and apparatus for isolation of flux materials in flip-chip manufacturing
US5175612A (en) * 1989-12-19 1992-12-29 Lsi Logic Corporation Heat sink for semiconductor device assembly
US5227663A (en) * 1989-12-19 1993-07-13 Lsi Logic Corporation Integral dam and heat sink for semiconductor device assembly
US5311060A (en) * 1989-12-19 1994-05-10 Lsi Logic Corporation Heat sink for semiconductor device assembly
US5399903A (en) * 1990-08-15 1995-03-21 Lsi Logic Corporation Semiconductor device having an universal die size inner lead layout
US5256902A (en) * 1991-08-14 1993-10-26 Vlsi Technology, Inc. Metal heatsink attach system
US5202943A (en) * 1991-10-04 1993-04-13 International Business Machines Corporation Optoelectronic assembly with alignment member
US5172301A (en) * 1991-10-08 1992-12-15 Lsi Logic Corporation Heatsink for board-mounted semiconductor devices and semiconductor device assembly employing same
US5434750A (en) * 1992-02-07 1995-07-18 Lsi Logic Corporation Partially-molded, PCB chip carrier package for certain non-square die shapes
US5281758A (en) * 1992-11-12 1994-01-25 Gte Products Corporation Electrical contact with shock absorbing means
US5397919A (en) * 1993-03-04 1995-03-14 Square Head, Inc. Heat sink assembly for solid state devices
US5367193A (en) * 1993-06-17 1994-11-22 Sun Microsystems, Inc. Low cost, thermally efficient, and surface mountable semiconductor package for a high applied power VLSI die
US5773886A (en) * 1993-07-15 1998-06-30 Lsi Logic Corporation System having stackable heat sink structures
US5900670A (en) * 1993-07-15 1999-05-04 Lsi Logic Corporation Stackable heatsink structures for semiconductor devices
US5654587A (en) * 1993-07-15 1997-08-05 Lsi Logic Corporation Stackable heatsink structure for semiconductor devices
US5438477A (en) * 1993-08-12 1995-08-01 Lsi Logic Corporation Die-attach technique for flip-chip style mounting of semiconductor dies
US5388327A (en) * 1993-09-15 1995-02-14 Lsi Logic Corporation Fabrication of a dissolvable film carrier containing conductive bump contacts for placement on a semiconductor device package
US8373428B2 (en) 1993-11-16 2013-02-12 Formfactor, Inc. Probe card assembly and kit, and methods of making same
US5820014A (en) 1993-11-16 1998-10-13 Form Factor, Inc. Solder preforms
US6274823B1 (en) 1993-11-16 2001-08-14 Formfactor, Inc. Interconnection substrates with resilient contact structures on both sides
US5869778A (en) * 1993-12-14 1999-02-09 Lsi Logic Corporation Powder metal heat sink for integrated circuit devices
US5963795A (en) * 1993-12-14 1999-10-05 Lsi Logic Corporation Method of assembling a heat sink assembly
US5376010A (en) * 1994-02-08 1994-12-27 Minnesota Mining And Manufacturing Company Burn-in socket
US6023103A (en) * 1994-11-15 2000-02-08 Formfactor, Inc. Chip-scale carrier for semiconductor devices including mounted spring contacts
USRE36217E (en) * 1995-02-06 1999-06-01 Minnesota Mining And Manufacturing Company Top load socket for ball grid array devices
US5579827A (en) * 1995-11-13 1996-12-03 Us Micro Lab, Inc. Heat sink arrangement for central processing unit
US8033838B2 (en) 1996-02-21 2011-10-11 Formfactor, Inc. Microelectronic contact structure
US5994152A (en) 1996-02-21 1999-11-30 Formfactor, Inc. Fabricating interconnects and tips using sacrificial substrates
US5923179A (en) * 1996-03-29 1999-07-13 Intel Corporation Thermal enhancing test/burn in socket for C4 and tab packaging
US5960975A (en) * 1996-04-01 1999-10-05 Tetra Laval Holdings & Finance S.A. Packaging material web for a self-supporting packaging container wall, and packaging containers made from the web
US6007348A (en) * 1996-05-07 1999-12-28 Advanced Intercommunications Corporation Solder ball terminal
US6325280B1 (en) 1996-05-07 2001-12-04 Advanced Interconnections Corporation Solder ball terminal
WO1997044991A1 (en) * 1996-05-23 1997-11-27 Motorola Inc. Apparatus and method for mounting an electronic component to a substrate
US8167630B2 (en) 1996-10-10 2012-05-01 Fci Americas Technology Llc High density connector and method of manufacture
US7476110B2 (en) 1996-10-10 2009-01-13 Fci Americas Technology, Inc. High density connector and method of manufacture
GB2339343A (en) * 1998-07-09 2000-01-19 Advantest Corp IC socket for holding IC having multiple parallel pins
US6164982A (en) * 1998-07-09 2000-12-26 Advantest Corporation IC socket for holding IC having multiple parallel pins
US6680528B2 (en) * 1999-02-05 2004-01-20 Matsushita Electric Industrial Co., Ltd. Electronic component and electronic equipment using the same
WO2001020674A3 (en) * 1999-09-10 2001-09-27 Llanelli Radiators Ltd Assembly for electrical/electronic components
WO2001020674A2 (en) * 1999-09-10 2001-03-22 Llanelli Radiators Limited Assembly for electrical/electronic components
US6563213B1 (en) * 1999-10-18 2003-05-13 Intel Corporation Integrated circuit heat sink support and retention mechanism
US6529378B2 (en) 1999-10-18 2003-03-04 Intel Corporation Integrated circuit heat sink support and retention mechanism
US6256202B1 (en) 2000-02-18 2001-07-03 Advanced Interconnections Corporation Integrated circuit intercoupling component with heat sink
US6293331B1 (en) 2000-08-11 2001-09-25 Tyco Electronics Logistics Ag Vibration and shock resistant heat sink assembly
US6454587B1 (en) * 2000-10-27 2002-09-24 Hewlett-Packard Company Assembly for mounting a bus termination device to a printed circuit board (PCB)
US6960923B2 (en) * 2001-12-19 2005-11-01 Formfactor, Inc. Probe card covering system and method
US7128587B2 (en) 2001-12-19 2006-10-31 Formfactor, Inc. Probe card covering system and method
US20060057875A1 (en) * 2001-12-19 2006-03-16 Formfactor, Inc. Probe card covering system and method
US20060089014A1 (en) * 2004-10-25 2006-04-27 Hon Hai Precision Ind. Co., Ltd. Module connector
US20070181555A1 (en) * 2006-02-09 2007-08-09 Onscreen Technologies, Inc. Method and apparatus for leak-proof mounting of a liquid cooling device on an integrated circuit
US7905276B2 (en) * 2006-02-09 2011-03-15 Onscreen Technology, Inc. Method and apparatus for leak-proof mounting of a liquid cooling device on an integrated circuit
US20070289313A1 (en) * 2006-06-15 2007-12-20 Mohinder Singh Bhatti Thermosiphon with thermoelectrically enhanced spreader plate
US20100178780A1 (en) * 2009-01-13 2010-07-15 Hon Hai Precision Industry Co., Ltd. Socket assembly incorporated with rotationally mounted pressing member
US8398411B2 (en) * 2009-01-13 2013-03-19 Hon Hai Precision Ind. Co., Ltd Socket assembly incorporated with rotationally mounted pressing member
JP2015133875A (en) * 2014-01-15 2015-07-23 株式会社東芝 power converter
US9736966B1 (en) * 2016-02-10 2017-08-15 International Business Machines Corporation Heat sink with integrated threaded lid
US10002819B2 (en) 2016-02-10 2018-06-19 International Business Machines Corporation Heat sink with integrated threaded lid
US10070562B2 (en) * 2016-05-17 2018-09-04 Ge Aviation Systems Llc Method and apparatus for heat-dissipation in an avionics chassis

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